Method of making paper boxes or the like with printed wrappers



July 18, 1939. c. L. CLAFF I 2,166,287

METHOD OF MAKING PAPER BOXES OR THE LIKE WITH PRINTED WRAPPERS wue.

C. L. Olaf! IN VEN TOR.

A TTORNEYS.

C. L.. CLAFF METHOD OF MAKING PAPER BOXES OR THE LIKE WITH PRINTED WRAPPERS Filed Feb. 4, 1938 6 SheetsSheet 2 C.L. Claff INVENTOR.

ATTORNEYS.

July 18, 193%. CLAW 2,166,287

METHOD OF MAKING PAPER BOXES OR THE LIKE WITH PRINTED WRAPPERS Filed Feb. 4, 1938 6 Sheets-Sheet 5 4 GZ;CZaff IN V EN TOR.

ATTORNEYS.

c. L. CLAFF 7 METHOD OF MAKING PAPER BOXES OR THE LIKE WITH PRINTED WRAPPERS July 18, 1939.

Filed Feb. 4, 1938 6 Sheets-Sheet 5 utllllw ll lllllllbfil ctz. cam

IN V EN TOR.

A TTORNEYS.

C. L. CLAFF July 1 8, 1939.

METHOD OF MAKING PAPER BOXES OR THE LIKE WITH PRINTED WRAPPERS Filed Feb. 4, 1938 6 Sheets-heet 6 az. czar IN V EN TOR.

A TTORNEYS.

Patented July 18, 1939 telesales,

his 4 1941 UNITED STAT-E S PATEur OFFICE METHOD OE MAKING PAPER BOXES 4 Claims.

This invention relates to a new and improved method of making paper boxes, box lids and the like with wrappers or covering sheets containing printed matter.

Heretofore it has been the practice to apply a web of paper to a cardboard web and thereafter to print the impression on the applied paper web. However, because of the varying thickness of the cardboard Web the impressions thus made have in not been satisfactory at all times. In order to create a superior package, it has been found desirable to apply a printed wrapper to the box or lid after it has been set up.

Anobject of the present invention is to prol vide amethod of applying printed wrappers to a web of cardboard used in the manufacture of boxes or lids of the type shown, for example, in Reissue 20,332, issued to me on April 13, 1937, and in my co-pending application, Serial Number 104,313, filed October 6, 1936.

In carrying out the improved method constituting the present invention, the printed wrapper can be applied either before or after the cardboard blank has been severed from the web. The

invention consists of certain new and novel steps in the method of producing boxes and lids or the like which will be hereafter more fully described and pointed out in the claims, it being understood that various changes may be made without departing from the spirit of the invention as claimed. I v

In the accompanying drawings the several steps of the method have been illustrated.

In said drawings Figure l is a plan view of a portion of a web following-the first step of the operation which is the formation of the first set of side slots.

Figure 2 illustrates the second step of the method wherein reenforcing or kraft tapes are applied.

Figure 3 illustrates the third step wherein the printed wrappers are applied in proper position to the slotted web.

Figure 4 illustrates the fourth step of the meth- 0d wherein the side portions of the web are scored.

Figure 5 illustrates the fifth step of the method consisting of the formation of supplemental side slots extending through both' the wrappers and the web.

Figure 6 illustrates the next step wherein transverse scores are formed which connect the opposed slots in the web. 1

Figure '7 is a view of a blank wherein, following the step shown in Figure 2, the side scores are formed in the reenforced blank before the wrapper is applied.

Figure 8 illustrates the next step in this modified method wherein the transverse scores are formed in the reenforced web.

Figure 9 shows the blank severed from the web.

Figure 10 shows the same blank with the wrapper applied thereto.

Figure 11 shows the next operation of producing supplemental side slots in the blank and wrapper.

Figure 12 is a perspective View of a box or box lid produced from a blank formed by either of the methods herein described.

Figure 13 is an enlarged section on line l3-I3, 15 Figure 12.

Figure 14 is an enlarged section on line I l-l4, Figure 12.

Figure 15 is a section on line l5-l5, Figure 14.

Figure 16 is a section on line Iii-46, Figure 14.

In carrying out the present method it is pre-- ferred to use a cross-grain cardboard web indicated at l and as this web passes through a blank forming machine, opposed alining side slots 2 are cut thereinto, four of these slots being provided for each blank to be produced. As the blank continues through the forming process, reenforcing strips, such as kraft tapes 3 are applied to one face of the web so as to extend across slots 2, these tapes being spaced inwardly slightly from the adjacent edges of the web.

The next step in the operation comprises the application of wrappers 4 to the web at the proper points. These wrappers, which had previously been prepared by cutting them to the proper sizes and printing the desired display matter on them, are to be placed one at a time upon the web so that they will be properly spaced, as shown in Figure 3 with the covered slots 2 extending under the corner portions thereof. Thereafter parallel scores 5 and 6 are pressed into the web I, tapes 3 and wrappers 4, the scores 6 being located at the inner ends of the slots 2 while the scores 5 extend across said slots adjacent to the centers thereof. Following the formation of these scores as in Figure 4, supplemental slots 1 are cut through the wrapper 4, tapes 3 and web I at points between and parallel with the slots 2 and, following this step, illustrated in Figure 5, transverse scores 8 and 9 are pressed into the web and wrapper, the scores 8 being in line with the opposed slots 2 while the scores 9 are in line with the opposed slots 1.

Following the foregoing operation the Web is severed transversely between the Wrappers along the line ID in Figure 6, thereby to produce a finished blank ready to be shaped into a box or a lid such as shown, for example, in Figures 12 to 16 inclusive.

As a modification of the method already explained, the web I wtih the slots 2 in the sides thereof and with the reenforcing kraft tape applied to the web and bridging the slots, can be scored longitudinally to produce scores II and I2 located as in Figure 5 and thereafter transverse scores l3 and I4 can be formed in the web, these being located as at 8 and 9 in Figure 6. The web is then severed transversely along the line I 5 to form separate blanks one of which has been shown in Figure 9 and following the formation of this blank, a printed wrapper of proper size and shape is affixed to the blank as shown at IS in Figure 10 and the entire blank then cut to form the supplemental slots l1 corresponding with slots 1 heretofore described. Thus the completed blank is the same as the one which was produced by severing a blank from the web along line It in Figure 6.

Following the formation of a blank by either method herein described, those portions of the blank defined by the scores 8 and 9 or l3 and I4 are folded to form side walls A of double thickness while those portions of the blank defined by the slots 2 and l or 2 and H will thus constitute wings of double thicknesses which, as shown in Figures 13, 14 and 15, are turned toward each other and adapted to be straddled by the end folds defined by the scores 5 and 6 or II and I2. Thus the finished box or lid will have a superior appearance because the printed matter appearing on the wrapper was impressed prior to the application of the wrapper to the web, thereby insuring a good impression.

In Figures 12 to 16 inclusive the side Walls of the completed box or lid has been indicated at A, the inturned wings at B, and the end folds at C.

It is to be understood that the term box used in the claims is to apply to either the body portion of a box or to the lid, and that the word scored is to be construed as broad enough to apply either to a score line or a crease.

What is claimed is:

1. The herein described method of producing a paper box with a printed wrapper, which includes the step of printing a wrapper of the desired size and shape, forming opposed alined slots in a thickness of cardboard, applying reenforcing tapes to said thickness where it will bridge the slots, affixing a printed wrapper to the thickness of cardboard and reenforcing tapes thereon, cutting supplemental slots through the wrapper and cardboard at points adjacent to and parallel with the first mentioned slots, and finally folding the cardboard and wrapper along lines alining with the opposed slots to produce side walls and wings of double thickness, the remaining edge portions of the cardboard and wrapper constituting end folds straddling the wings.

2. The herein described method of producing a cardboard box with a printed wrapper which includes the step of forming opposed alining slots in a thickness of cardboard at points where said thickness is to be folded to produce side walls of the box, applying reenforcing tapes to said thickness of cardboard where they will bridge the slots, affixing a printed wrapper to the thickness of cardboard and the tapes thereon, cutting slots through the wrapper, tapes and cardboard at points where they will aline with the bases of the folded side walls of the box, subsequently folding the cardboard and wrapper along the lines defined by the slots thereby to produce side walls of double thicknesses and end wings of double thicknesses, and finally folding portions of the cardboard and wrapper over the end wings to constitute end walls of the box.

3. A method of producing a paper box which includes the step of forming opposed alining slots in the side edge portions of a cross-grain cardboard web, applying reenforcing tapes to one face of the web where they will bridge the slots, thereafter applying a printed wrapper to the web and tapes where it will bridge the slots, subsequently scoring the web, wrapper and tapes transversely of the slots, thereafter forming supplemental alining transverse slots between and parallel with the first mentioned slots and extending through the web, tapes and wrapper,

thereafter scoring the wrapper, web and tapes in line with all of the slots, thereafter severing the web between the applied wrapper to produce a blank, and finally setting up the blank to provide a box having folded side walls, inturned end wings, and end folds straddling the wings.

4. The herein described method of producing a cardboard box having a printed wrapper, which includes the step of forming opposed alining slots in the side portions of a cross-grain web of cardboard, applying reenforcing tapes to the web where they will bridge the slots, thereafter forming the web with spaced scores adjacent each edge thereof and extending transversely of the slots and longitudinally of the tapes, subsequently providing the web with pairs of transverse scores, one score of each pair being in line with the adjacent slots, thereafter severing the web transversely between the determined slots to produce a blank having a slot adjacent to each L.

corner thereof, subsequently aifixing a printed wrapper to the blank where it will bridge the slots, thereafter cutting slots through opposed edge portions of the web, and the wrapper thereon, said slots being parallel with the slots at the .1.

CLARENCE LLOYD CLAFF. 

